Display screen or portion thereof with a graphical user interface



FIG. 1 is a front view of a first image in a sequence of a displayscreen or portion thereof with a graphical user interface that has thenew design.

FIG. 2 is a front view of a second image of the sequence of thegraphical user interface, shown without the broken line environment forclarity of disclosure; and,

FIG. 3 is a front view of a third image of the sequence of the graphicaluser interface.

The appearance of the animated image sequentially transitions betweenthe images shown in FIGS. 1 through 3. This process or period in whichone image transitions to another forms no part of the claimed design.

The outermost broken lines in FIG. 1 illustrate the environment of thedesign and form no part of the claim. The remaining broken linesillustrate portions of the display screen or portions of the graphicaluser interface that form no part of the claimed design.

CLAIM The ornamental design for a display screen or portion thereof witha graphical user interface, as shown and described.